import re
from datetime import datetime, timedelta

import cv2
import numpy as np
from scipy import signal

from module.base.ocr import Ocr
from module.base.timer import Timer
from module.base.utils import area_offset, get_color
from module.handler.info_bar import InfoBarHandler
from module.logger import logger
from module.reward.assets import *
from module.ui.page import page_reward, page_commission, CAMPAIGN_CHECK
from module.ui.ui import UI

dictionary = {
    'major_comm': ['自主训练', '对抗演习', '科研任务', '工具整备', '战术课程', '货物运输'],
    'daily_comm': ['日常资源开发', '高阶战术研发'],
    'extra_drill': ['航行训练', '防卫巡逻', '海域浮标检查作业'],
    'extra_part': ['委托'],
    'extra_cube': ['演习'],
    'extra_oil': ['油田'],
    'extra_book': ['商船护卫'],
    'urgent_drill': ['运输部队', '侦查部队', '主力部队', '精锐部队'],
    'urgent_part': ['维拉', '伊', '多伦瓦', '恐班纳'],
    'urgent_book': ['土豪尔', '姆波罗', '马拉基', '卡波罗', '马内', '玛丽', '萌', '特林'],
    'urgent_box': ['装备', '物资'],
    'urgent_cube': ['解救', '敌袭'],
    'urgent_gem': ['要员', '度假', '巡视'],
    'urgent_ship': ['观舰']
}


class Commission:
    def __init__(self, image, y):
        self.y = y
        self.stack_y = y
        self.area = (188, y - 119, 1199, y)
        self.image = image
        self.valid = True

        # Name
        area = area_offset((211, 26, 415, 49), self.area[0:2])
        button = Button(area=area, color=(), button=area, name='COMMISSION')
        ocr = Ocr(button, lang='cnocr', back=(74, 97, 148), use_binary=False)
        self.button = button
        self.name = ocr.ocr(image)
        self.genre = self.parse_name(self.name)

        # Duration time
        area = area_offset((290, 74, 390, 92), self.area[0:2])
        button = Button(area=area, color=(), button=area, name='DURATION')
        ocr = Ocr(button, lang='stage', back=(57, 85, 132))
        self.duration = self.parse_time(ocr.ocr(image))

        # Expire time
        area = area_offset((-49, 68, -45, 84), self.area[0:2])
        button = Button(area=area, color=(189, 65, 66), button=area, name='IS_URGENT')
        if button.appear_on(image):
            area = area_offset((-49, 73, 45, 91), self.area[0:2])
            button = Button(area=area, color=(), button=area, name='EXPIRE')
            ocr = Ocr(button, lang='stage', back=(189, 65, 66))
            self.expire = self.parse_time(ocr.ocr(image))
        else:
            self.expire = None

        # Status
        area = area_offset((179, 71, 187, 93), self.area[0:2])
        dic = {
            0: 'finished',
            1: 'running',
            2: 'pending'
        }
        self.status = dic[int(np.argmax(get_color(image, area)))]

    def __str__(self):
        if self.valid:
            if self.expire:
                return f'{self.name} (Genre: {self.genre}, Status: {self.status}, Duration: {self.duration}, Expire: {self.expire})'
            else:
                return f'{self.name} (Genre: {self.genre}, Status: {self.status}, Duration: {self.duration})'
        else:
            return f'{self.name} (Invalid)'

    def __eq__(self, other):
        """
        Args:
            other (Commission):

        Returns:
            bool:
        """
        threshold = timedelta(seconds=30)
        if not self.valid or not other.valid:
            return False
        if self.genre != other.genre or self.status != other.status:
            return False
        if (other.duration < self.duration - threshold) or (other.duration > self.duration + threshold):
            return False
        if (not self.expire and other.expire) or (self.expire and not other.expire):
            return False
        if self.expire and other.expire:
            if (other.expire < self.expire - threshold) or (other.expire > self.expire + threshold):
                return False

        return True

    def parse_time(self, string):
        """
        Args:
            string (str): Such as 01:00:00, 05:47:10, 17:50:51.

        Returns:
            timedelta: datetime.timedelta instance.
        """
        string = string.replace('D', '0')  # Poor OCR
        result = re.search('(\d+):(\d+):(\d+)', string)
        if not result:
            logger.warning(f'Invalid time string: {string}')
            self.valid = False
            return None
        else:
            result = [int(s) for s in result.groups()]
            return timedelta(hours=result[0], minutes=result[1], seconds=result[2])

    def parse_name(self, string):
        """
        Args:
            string (str): Commission name, such as 'NYB要员护卫'.

        Returns:
            str: Commission genre, such as 'urgent_gem'.
        """
        for key, value in dictionary.items():
            for keyword in value:
                if keyword in string:
                    return key

        logger.warning(f'Name with unknown genre: {string}')
        self.valid = False
        return ''


class CommissionGroup:
    show = (188, 67, 1199, 692)
    height = 210  # About 1.5 commission height
    lower = int((show[3] - show[1]) / 2 - height / 2)
    template_area = (620, lower, 1154, lower + height)

    def __init__(self):
        self.template = None
        self.swipe = 0
        self.commission = []

    def __contains__(self, item):
        for commission in self.commission:
            if commission == item:
                return True

        return False

    def __iter__(self):
        return iter(self.commission)

    def __bool__(self):
        return len(self.commission) > 0

    @property
    def count(self):
        return len(self.commission)

    def merge(self, image):
        """Load commissions from image.
        If you want to load commissions from multiple image,
        make sure that the next one and previous one have something same.
        Which means, you merge a image, then swipe a little bit, then merge another image.

        Args:
            image (PIl.Image.Image):
        """
        # Find swipe distance
        if self.template is None:
            self.template = np.array(image.crop(self.template_area))
            self.swipe = 0
        res = cv2.matchTemplate(self.template, np.array(image), cv2.TM_CCOEFF_NORMED)
        _, similarity, _, position = cv2.minMaxLoc(res)
        if similarity < 0.85:
            logger.warning(f'Low similarity when finding swipe. Similarity: {similarity}, Position: {position}')
        self.swipe -= position[1] - self.template_area[1]
        self.template = np.array(image.crop(self.template_area))

        # Find commission position
        color_height = np.mean(image.crop((597, 0, 619, 720)).convert('L'), axis=1)
        parameters = {'height': 200}
        peaks, _ = signal.find_peaks(color_height, **parameters)
        peaks = [y for y in peaks if y > 67 + 117]

        # Add commission to list
        for y in peaks:
            stack_y = y + self.swipe
            diff = np.array([c.stack_y - stack_y for c in self.commission])
            if np.any(np.abs(diff) < 3):
                continue
            commission = Commission(image, y=y)
            commission.stack_y = stack_y
            logger.info(f'Add commission: {commission}')
            self.commission.append(commission)


def commission_choose(daily, urgent, priority, time_limit=None):
    """
    Args:
        daily (CommissionGroup):
        urgent (CommissionGroup):
        priority (dict):
        time_limit (datetime):

    Returns:
        CommissionGroup, CommissionGroup: Chosen daily commission, Chosen urgent commission
    """
    # Count Commission
    commission = daily.commission + urgent.commission
    running_count = int(np.sum([1 for c in commission if c.status == 'running']))
    logger.attr('Running', running_count)
    if running_count >= 4:
        return [], []

    # Calculate priority
    commission = [c for c in commission if c.valid and c.status == 'pending']
    comm_priority = []
    for comm in commission:
        pri = priority[comm.genre]
        if comm.duration <= timedelta(hours=2):
            pri += priority['duration_shorter_than_2']
        if comm.duration >= timedelta(hours=6):
            pri += priority['duration_longer_than_6']
        if comm.expire:
            if comm.expire <= timedelta(hours=2):
                pri += priority['expire_shorter_than_2']
            if comm.expire >= timedelta(hours=6):
                pri += priority['expire_longer_than_6']
        comm_priority.append(pri)

    # Sort
    commission = list(np.array(commission)[np.argsort(comm_priority)])[::-1]
    if time_limit:
        commission = [comm for comm in commission if datetime.now() + comm.duration <= time_limit]
    commission = commission[:4 - running_count]
    daily_choose, urgent_choose = CommissionGroup(), CommissionGroup()
    for comm in commission:
        if comm in daily:
            daily_choose.commission.append(comm)
        if comm in urgent:
            urgent_choose.commission.append(comm)

    if daily_choose:
        logger.info('Choose daily commission')
        for comm in daily_choose:
            logger.info(comm)
    if urgent_choose:
        logger.info('Choose urgent commission')
        for comm in urgent_choose:
            logger.info(comm)

    return daily_choose, urgent_choose


class RewardCommission(UI, InfoBarHandler):
    daily: CommissionGroup
    urgent: CommissionGroup
    daily_choose: CommissionGroup
    urgent_choose: CommissionGroup

    def _commission_ensure_mode(self, mode):
        if self.appear(COMMISSION_DAILY):
            current = 'daily'
        elif self.appear(COMMISSION_URGENT):
            current = 'urgent'
        else:
            logger.warning('Unknown Commission mode')
            return False
        if current == mode:
            return False

        if mode == 'daily':
            self.device.click(COMMISSION_DAILY)
        if mode == 'urgent':
            self.device.click(COMMISSION_URGENT)

        self.device.sleep(0.3)
        self.device.screenshot()
        return True

    def _commission_mode_reset(self):
        if self.appear(COMMISSION_DAILY):
            current, another = COMMISSION_DAILY, COMMISSION_URGENT
        elif self.appear(COMMISSION_URGENT):
            current, another = COMMISSION_URGENT, COMMISSION_DAILY
        else:
            logger.warning('Unknown Commission mode')
            return False

        self.device.click(another)
        self.device.screenshot()
        self.device.click(current)
        self.device.sleep(0.3)
        self.device.screenshot()

        return True

    def _commission_swipe(self, distance=180):
        # Distance of two commission is 146px
        self.device.swipe((0, -distance), box=(620, 67, 1154, 692), random_range=(-20, -5, 20, 5))
        self.device.click(COMMISSION_STOP_SCROLLING)
        self.device.sleep(0.3)
        self.device.screenshot()

    def _commission_scan_list(self):
        commission = CommissionGroup()
        commission.merge(self.device.image)
        if commission.count <= 3:
            return commission

        prev = commission.count
        for _ in range(15):
            self._commission_swipe()
            commission.merge(self.device.image)
            if commission.count - prev <= 0:
                break
            prev = commission.count

        return commission

    def _commission_scan_all(self):
        logger.hr('Scan daily')
        self._commission_ensure_mode('daily')
        daily = self._commission_scan_list()

        logger.hr('Scan urgent')
        self._commission_ensure_mode('urgent')
        urgent = self._commission_scan_list()

        logger.hr('Showing commission')
        logger.info('Daily commission')
        for comm in daily:
            logger.info(comm)
        if urgent.count:
            logger.info('Urgent commission')
            for comm in urgent:
                logger.info(comm)

        self.daily = daily
        self.urgent = urgent
        self.daily_choose, self.urgent_choose = commission_choose(
            self.daily,
            self.urgent,
            priority=self.config.COMMISSION_PRIORITY,
            time_limit=self.config.COMMISSION_TIME_LIMIT)
        return daily, urgent

    def _commission_start_click(self, comm):
        """
        Args:
            comm (Commission):
        """
        logger.info(f'Start commission {comm}')
        comm_timer = Timer(3)
        while 1:
            if comm_timer.reached():
                self.device.click(comm.button)
                comm_timer.reset()

            if self.appear_then_click(COMMISSION_OIL_CONFIRM, offset=True, interval=3):
                pass
            if self.appear_then_click(COMMISSION_START, interval=3):
                pass
            if self.appear_then_click(COMMISSION_ADVICE, interval=3):
                pass

            if self.handle_info_bar():
                break

            self.device.screenshot()

        return True

    def _commission_find_and_start(self, comm):
        """
        Args:
            comm (Commission):
        """
        logger.hr(f'Finding commission')
        logger.info(f'Finding commission {comm}')

        commission = CommissionGroup()
        prev = 0
        for _ in range(15):
            commission.merge(self.device.image)

            if commission.count - prev <= 0:
                return True
            prev = commission.count

            if comm in commission:
                # Update commission position.
                # Because once you start a commission, the commission list changes.
                for new_comm in commission:
                    if comm == new_comm:
                        comm = new_comm
                self._commission_start_click(comm)
                return True

            self._commission_swipe()

        logger.warning(f'Commission not found: {comm}')
        return False

    def commission_start(self):
        """
        Method to scan and run commissions.
        Make sure current page is page_commission before calls.
        """
        logger.hr('Commission scan', level=2)
        self._commission_scan_all()

        logger.hr('Commission run', level=2)
        if self.daily_choose:
            for comm in self.daily_choose:
                if not self._commission_ensure_mode('daily'):
                    self._commission_mode_reset()
                self._commission_find_and_start(comm)
        if self.urgent_choose:
            for comm in self.urgent_choose:
                if not self._commission_ensure_mode('urgent'):
                    self._commission_mode_reset()
                self._commission_find_and_start(comm)
        if not self.daily_choose and not self.urgent_choose:
            logger.info('No commission chose')

    def handle_commission_start(self):
        """Make sure current page is page_reward before calls.

        Returns:
            bool: If runs a commission.
        """
        if not self.config.ENABLE_COMMISSION_REWARD:
            return False
        self.device.screenshot()
        if not self.appear(COMMISSION_HAS_PENDING):
            logger.info('No commission pending')
            return False

        self.ui_goto(page_commission)

        self.commission_start()

        self.ui_goto(page_reward, skip_first_screenshot=True)

    def commission_notice_show_at_campaign(self):
        """
        Returns:
            bool: If any commission finished.
        """
        return self.appear(CAMPAIGN_CHECK) and self.appear(COMMISSION_NOTICE_AT_CAMPAIGN)